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【目的】通过不同混播比例、不同种植方式建植混播草地的研究,探索自然降水在500 mm以上的雨养地区,建植优质、高产、稳定与中长利用年限混播人工草地的技术途径。【方法】试验设红三叶(Trifoliumpratens)、红豆草(Onobrychis viciaefolia)与鸭茅(Dactylis glomerata)、无芒雀麦(Broumis inermis)、猫尾草(Phlemu pratense)5种牧草混播,混播比例为4∶6、6∶4、5∶5三种处理,各处理又以1∶1行、2∶2行、3∶3行异行种植;在豆科牧草花期与禾本科牧草抽穗期,刈割测定草地群落各种群组分的密度、高度与产草量,对比分析各处理的草地经济性状表现。【结果】在不同种植方式的处理中,1∶1行的异行种植方式,各项经济性状指标均优于其它种植方式;在不同混播比例处理中,以4∶6混播比例的草群产量最高,在1∶1行处理中,平均产干草1 209.1 g/m2;其它处理也多在800 g/m2以上。【结论】试验区草地在建植当年就表现出良好的长势与较高的生产性能,尤其是豆科牧草的产量在草群中大幅度增加,可极大地提升草地的质量。
【Objective】 The objective of this study was to study the methods of planting mixed grassland with different mixing ratios and planting methods and to explore the technical ways of mixing artificial grassland with good quality, high yield, stability and long-term useful life in rainfed areas with natural precipitation over 500 mm. 【Method】 Trifoliumpratens, Onobrychis viciaefolia, Dactylis glomerata, Broumis inermis and Phlemu pratense were mixed and mixed in a ratio of 4: 6, 6: 4, 5: 5. The treatments were also planted in 1: 1 row, 2: 2 row and 3: 3 row. In the flowering stage of forage legume and gramineous forage, The density, height and yield of each group of grass community were determined by cutting, and the economic performance of each treatment was compared. 【Result】 The results showed that in the different planting methods, the 1: 1 rows of different planting methods and the indexes of economic traits were all better than other planting methods. In the different mixed-sowing treatments, The highest was 1 209.1 g / m 2 for hay 1: 1 and 800 g / m 2 for other treatments. 【Conclusion】 The grassland in the experimental area showed good growth and high production performance in the year of planting, especially the output of leguminous forage increased greatly in grass group, which can greatly improve the quality of grassland.